首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1444篇
  免费   34篇
  国内免费   4篇
财政金融   99篇
工业经济   48篇
计划管理   421篇
经济学   200篇
综合类   135篇
运输经济   27篇
旅游经济   40篇
贸易经济   189篇
农业经济   210篇
经济概况   113篇
  2025年   2篇
  2024年   19篇
  2023年   23篇
  2022年   12篇
  2021年   29篇
  2020年   40篇
  2019年   53篇
  2018年   42篇
  2017年   59篇
  2016年   48篇
  2015年   43篇
  2014年   99篇
  2013年   173篇
  2012年   127篇
  2011年   150篇
  2010年   96篇
  2009年   77篇
  2008年   68篇
  2007年   73篇
  2006年   58篇
  2005年   41篇
  2004年   35篇
  2003年   26篇
  2002年   15篇
  2001年   27篇
  2000年   14篇
  1999年   9篇
  1998年   6篇
  1996年   6篇
  1995年   3篇
  1994年   2篇
  1993年   1篇
  1990年   1篇
  1985年   3篇
  1984年   1篇
  1979年   1篇
排序方式: 共有1482条查询结果,搜索用时 15 毫秒
81.
基于宅基地管理问题,介绍了农村宅基地调查相关概念及地籍总调查流程,野外数字化测图及航空摄影测量,权属调查,并对农村宅基地的建库流程,检查验收标准进行了详细介绍。深入基层调查,宣传并规范了对宅基地的利用,最终建立了数据库对土地利用总量进行宏观调控。以CASS9.0为基础,MapGIS K9为平台,利用建库软件将图形数据与属性数据连接,最后通过质检软件入库,并提出一些针对性建议,为宅基地发证工作提供基础数据和政策参考。  相似文献   
82.
    
Given the high risk of severe accidents at level crossings (LCs), this study examined legal and illegal crossings by pedestrians and cyclists at a high-traffic LC in Zagreb, Croatia. Survey data and field observations were collected to identify reasons for risky behaviour. Behaviour was observed under normal conditions and in the presence of various safety measures in order to identify measures that can reduce risky behaviour. Results show that the presence of police officer at the LC was most effective at reducing illegal crossings, while the presence of cameras contributes significantly as well, especially after safety educational campaign when illegal crossing decreases for 59.23%. We can assume that in future the improvement regarding human behaviour on LC could be made with cameras on LC and more frequent educational campaigns. This is the first reported use of field survey and video surveillance methods to analyse user behaviour at LCs in Croatia.  相似文献   
83.
邓琛琛  陈良华 《价值工程》2007,26(12):138-141
在国有企业和政府管理体制改革已深入进行并取得积极进展的今天,进一步推进事业单位改革已经显得尤为迫切。以江苏省事业单位作为调查对象,全面了解江苏省事业单位改革的情况,在调查问卷数据分析的基础上,对当前体制改革中存在的问题做进一步分析,抓住改革难点,实施重点突破。  相似文献   
84.
In the past few years, few human resource practices have received as much attention as multi-source feedback systems (MSFSs). In the US and Canada, it is estimated that over one-third of organizations are using some form of MSFS and recent surveys show that this practice is still gaining popularity. Concurrently, a substantial amount of literature has focused on the effectiveness of this performance management practice. However, while few would dispute the popularity of MSFS, relatively little has been published on the use of these systems outside North America and thus little is known about their form and effectiveness in international contexts. This paper outlines the results of an international survey of MSFS. Interview data from HR managers and consultants from Argentina, Australia, China, Slovakia, Spain and the UK demonstrate that MSFS are being implemented, in slightly different ways, in each of these six countries. The main challenges in the application of MSFS in these various countries are the communication efforts necessary before and after implementation, and the inherent difficulty in giving and receiving feedback. The results of this study also provide data as to the perceived future of MSFS in each of the countries surveyed.  相似文献   
85.
调查福州大学城排水管材应用,分析排水管材目前存在的问题,提出改进措施,探讨新型管材代替传统管材的可能性,为设计人员、施工单位及广大用户选择排水管材提供参考。  相似文献   
86.
李新宝  陈霞 《价值工程》2012,31(28):47-48
近几年浅层地震勘探技术在工程勘察中得到广泛应用,在工程领域中快速发展,具有方便、直观、快速的特点,其效果良好。分析通过列举几个工程实例所取得的成果认为,高密度地震图像,浅层高分辨反射波和多道瞬态而波等勘察的技术方法,对不同要求和性质的岩土工程项目有其互补性。  相似文献   
87.
    
This study examines corporate performance effects of cross‐business knowledge synergies in multibusiness firms. It synthesizes the resource‐based view of diversification and the economic theory of complementarities to conceptualize cross‐business knowledge synergies in terms of the relatedness and the complementarity of knowledge resources across business units of the multibusiness firm. The study hypothesizes that corporate performance is improved when the firm simultaneously exploits a complementary set of related knowledge resources across its business units. In a sample of 303 multibusiness firms, the study finds that synergies arising from product knowledge relatedness, customer knowledge relatedness, or managerial knowledge relatedness do not improve corporate performance on their own. Synergies arising from the complementarity of the three types of knowledge relatedness significantly improve both market‐based and accounting‐based performance of the multibusiness corporation. Copyright © 2004 John Wiley & Sons, Ltd.  相似文献   
88.
This study explored the relationships between the perception of restorative natural environments, specialization in mountain hiking and flow experience. On-site interviews were conducted at mountain huts in the Salzkammergut, Austria, in 2009. The analysis of 369 hikers suggests that a relationship exists among recreation specialization, the perception of restorative environments and flow. With increasing specialization, people are more likely to experience flow. The restorative quality dimensions of “being away,” “fascination” and “compatibility” with the mountainous landscape were positive predictors of flow experience.  相似文献   
89.
This paper represents a contribution to empirical debate on the persistence of innovation in the firm, by exploiting an innovative panel database that, for the first time, links three waves of the Italian Community Innovation Survey with an administrative data source providing economic and financial information for firms in the Italian manufacturing sector, 1996–2003. By using both a dynamic logistic model and a Granger causality approach, we show that in order to innovate successfully it is much more important to have an adequate flow of profits during an appropriate time span rather than high profits only during one period before innovation. Our causality tests prove the existence of a dynamic interaction between innovation and profitability: successful innovation can, in the short run, generate the profitability conditions that can then enhance the financial resources needed to reinvest in new technological opportunities, thus causing the firm to persist in its innovative behaviour. We have also shown that another important source of persistence is represented by past innovative experience. A firm with consolidated innovative behaviour would have a higher probability of future successful innovation with respect to a firm that occasionally (or accidentally) innovates. Persistence in innovation enables a firm to take advantage of substantial technological and organizational learning effects, which improve with time.  相似文献   
90.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号